Post-mounted winged insulator arm assembly

ABSTRACT

An insulator-mounting assembly having oppositely directed, upwardly angled arms of dielectric material, a two-part metallic mount for fixedly engaging and holding adjacent ends of said arms, one part of said mount being provided with portions adapted to fixedly engage the surface of a pole and to be bolted thereto for mounting said arms on said pole, a metallic insulatormounting bracket on the other end of each arm, said brackets being electrically spaced from the metallic mount, and a shorting bond wire connecting said brackets and, thereby, electrically connecting the insulators on said brackets for relaying the circuit and deenergizing the line wires connected to the insulators.

United States Patent Collister [54] POST-MOUNTED WINGED INSU LATOR ARMASSEMBLY [72] Inventor: Robert A. Collister, Temple City, Calif.

[73] Assignee: Scott Engineering, Inc., Los Angeles,

Calif.

[22] Filed: Sept. 15, 1970 [21] Appl. No.: 72,453

[52] US. CL ..l74/l49 R, 174/2, 174/45 R, 248/221 [51] Int. Cl ..H0lbl7/l4, HOZg 7/00 [58] FieldofSear-ch ..l74/2,6,40R, 45 R, 148, 174/149R, 158 R, 163 R; 52/40, 649, 697, 72l;

. [56] References Cited UNITED STATES PATENTS 224,580 2/1880 Chinnock174/45 R X 1,876,577 9/1932 Austin 2,056,366 10/1936 Richards et al..174/45 R X [15] 3,643,009 Feb. 15,1972

OTHER PUBLICATIONS Columbia Products Co. advertisement entitled New Lookin Pole Top Designs. Electrical World, Vol. 162, No. 18. Nov. 2, 1964,page 76.

Primary ExaminerLaramie E. Askin Attorney-Hyman Jackman [57] ABSTRACT Aninsulator-mounting assembly having oppositely directed, upwardly angledanns of dielectric material. a two-part metallic mount for fixedlyengaging and holding adjacent ends of said arms, one part of said mountbeing provided with portions adapted to fixedly engage the surface of apole and to be bolted thereto for mounting said arms on said pole, ametallic insulator-mounting bracket on the other end of each arm, saidbrackets being electrically spaced from the metallic mount, and ashorting bond wire connecting said brackets and, thereby, electricallyconnecting the insulators on said brackets for relaying the circuit anddeenergizing the line wires connected to the insulators.

3 Claims, 4 Drawing Figures PAIENIEBFEB 15 I972 SHEET 1 [IF 2 INVENTOR.ROBERT A601 L I575? PATENIEBFEB 15 m2 SHEET 2' BF 2 POST-MOUNTED WINGEDINSULATOR ARM ASSEMBLY BACKGROUND OF THE INVENTION 1. Field of theInvention For pole-mounting of power'and other electric currentconducting lines.

2. Description of the Prior Art The common manner of mounting line wireinsulators on poles, conventionally, comprises cross arms affixed tosaid poles and mounting spaced lines connected to insulators provided onsaid cross arms. A later development eliminates the cross arms and usesstandoff brackets which directly carry the insulators and are affixed tothe sides of the poles.

SUMMARY OF THE INVENTION The present winged insulator arm assemblycomprises, generally, a two-part metallic mount adapted to be fixedlyconnected to a pole 11, two separate, end-abutted arms 12 preferably ofsolid wood extending oppositely angularly upswept from said mount 10, ametallic bracket 13 affixed to the outer end of each said wooden arm,each one of which mounts an insulator l4, and shorting bond wireelectrically connecting said brackets.

An object of the present invention is to provide a winged insulator armassembly of the character above generally described that is particularlycharacterized by two shorter lengths of wood that replaces the singleand more expensive longer cross arm and which are arranged at upsweptangles that drain moisture away from the insulators that are affixed tothe outer ends of said length of wood.

Another object is to provide an insulator arm assembly that ischaracterized by strong long-wearing mounting means for said lengths ofwood, whereby rigidity of said assembly is provided in a safe butinexpensive manner.

This invention also has for its objects to provide such means that arepositive in operation, convenient in use, easily installed in a workingposition and easily disconnected therefrom, economical of manufacture,relatively simple, and of general superiority and serviceability.

The invention also comprises novel details of construction and novelcombinations and arrangements of parts, which will more fully appear inthe course of the following description, which is based on theaccompanying drawings. However, said drawings merely show, and thefollowing specification merely describes one embodiment of the presentinvention, which is given by way of illustration or example only.

In the drawings, like reference characters designate similar parts inthe several views.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a front elevational view ofpost-mounted winged insulator arm assembly according to the presentinvention, one of said arms being broken away.

FIG. 2 is a plan view as seen from the top of FIG. 1 with the insulatoron the unbroken arm partly broken away.

FIG. 3 is an enlarged vertical sectional view as taken on the line 3-3of FIG. 1.

FIG. 4 is a view of the rear face of a mounting plate of the assembly.

FIG. 5 is a cross-sectional view as taken on the plane of the line 55 ofFIG. 4' the same showing the parts as assembled in FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT The wooden arms 12 arepreferably of rectangular cross section, one end face 16 of each armbeing normal to length and the other end face 17 being at an angle tothe length of each said arm. The arms, when their end faces 17 areabutted, as shown in FIG. 1, define an included angle of approximately150. Said arms 12, when connected by their ends adjacent the faces 17 tothe mount 10, having an upswept disposition with the ends adjacent thefaces 16 above the ends connected to said mount.

The mount 10 comprises a base part 18 that, as by bolts 19, is adaptedto be fixedly mounted, in a preferably vertical position, on the side ofthe pole l1, and a plate part 20 that, by means of bolts 21, whichextend through the lower, inner ends of the arms 12, fixedly connecttogether the mount parts 18 and 20 and the arms 12.

The base part 18 of the mount 10 is a vertically extending andpreferably flat central portion 22 having upwardly and oppositelyangularly directed portions 23, providing said base part 18 with acruciform configuration, as in FIG. 4. Along the lateral edges of thecentral portion 22, rearwardly and oppositely angled bearing flanges 24are integrally provided on the part 18, said flanges 24 being so formedas to cooperate with said central portion 22 to form a nesting area intowhich the outer face of a pole 11 is adapted to fit, as shown in FIGS. 2and 5. Not in all instances will the face of the pole bear against theportion 22 of said base part 18 but, inany case, the flanges 24 will,the ends of said flanges being preferably provided with beads 25 thatbite into the pole so the base part 18 has a rigid position on the pole.

As shown in FIGS. 3 and 4, the portion 24 of the base part 18 isprovided with suitable holes 26 through which the abovementioned bolts19 extend.

As shown best in FIGS. 2 and 3, the angularly directed portions 23,along their upper and lower edges, are provided with flanges 27 and 28between which the abutting inner ends of the arms 12 are disposed. Asshown in FIGS. 2 and ,4, said flanges extend across the central portion23. The upper flange 27 is preferably deeper than the lower flange 28,the latter being preferably shallow, as shown, so as not to extend intoproximity to the bond wire 15 which, in this case, extendslongitudinally along the bottom of a kerf or groove 29 in the portionsof the arms 12 that are engaged in the channel that is formed by thebase portion, comprised of portions 22 and 23 and the flanges 27 and 28flanking the same.

The plate part 20 of the mount 10 is shown as a channel formed to have aweb 30 and upper and lower flanges 31 and 32, spaced apart similarly tothe spacing between the flanges 27 and 28 between which the abuttinginner ends of the arms 12 are disposed.

The plate part 20 of the mount 10 is shown as a channel formed to have aweb 30 and upper and lower flanges 31 and 32, spaced apart similarly tothe spacing between the flanges 27 and 28 of the base part 18 of saidmount. It will be seen from FIGS. 1 and 4, that the plate part has thesame included angle between the opposite ends as the included anglebetween the opposite ends of the channel that is formed by the web 22,23and flanges 27 and 28 in the plate part 20, as above described.

FIG. 3 best shows how said two channels cooperate to confine the innerends of the arms 12 when fixedly joined together by the bolts 21 whichpass through bores provided in said ends of the arms.

Each bracket 13 is affixed, as by a bolt 33 to the outer end of eachrespective arm 12, the same comprising extensions of said arms. It willbe understood that the broken arm 12 at the right of FIGS. 1 and 2, inpractice, is provided with a bracket 13 similar to the one shown andthat each said bracket is formed to have an end wall 34 to which aninsulator 14 is affixed, the latter preferably extending outwardly inalignment with the arms 12.

As shown, the bond wire 15, by means of the bolts 33, electricallyconnects the brackets 13 so that any leakage in one of the insulatorswill 'be shorted to the other, as mentioned hereinabove.

It will be understood that each insulator 14, by means of a bracketextension 35, connects to and carries a current conducting wire (notshown).

Assemblies as above may be mounted on poles singly or in verticallyspaced plurality, as desired.

While the foregoing has illustrated and described what is nowcontemplated to be the best mode of carrying out the invention, theconstruction is, of course, subject to modification without departingfrom the spirit and scope of the invention.

Having thus described the invention, what is claimed and desired to besecured by Letters Patent is:

1. An insulator arm assembly comprising:

a two-part metallic mount comprising a base part adapted to be affixedto the side of a pole, and a front plate part spaced from the base partin a direction away from the pole, said parts being formed to haveflanges that are directed toward each other to form channels opening onthe space between the mount parts,

two oppositely directed nonmetallic and dielectric arms with one end ofeach in end abutment and partly confined in the channels of the mountparts,

fastener means connecting said mount parts and extending transverselythrough the abutting ends of the arms to fixedly connect the arms to theparts of the mount,

an electrically conducting, insulator-mounting bracket affixed to theouter end of each of said arms, and

a current-shorting bonding wire extending between and connected to saidbrackets, said wire being disposed beneath and passing between and inspaced relation to the mount parts.

2. An insulator arm assembly according to claim 1 in which the armsextend angularly upwardly from-said mount, and the bonding wire has anintermediate portion that passes between the mount parts and is incontact with the undersurfaces of the arms.

3. An insulator arm assembly according to claim 2 in which the armsadjacent to where they abut are provided with a lonis disposed.

1. An insulator arm assembly comprising: a two-part metallic mountcomprising a base part adapted to be affixed to the side of a pole, anda front plate part spaced from the base part in a direction away fromthe pole, said parts being formed to have flanges that are directedtoward each other to form channels opening on the space between themount parts, two oppositely directed nonmetallic and dielectric armswith one end of each in end abutment and partly confined in the channelsof the mount parts, fastener means connecting said mount parts andextending transversely through the abutting ends of the arms to fixedlyconnect the arms to the parts of the mount, an electrically conducting,insulator-mounting bracket affixed to the outer end of each of saidarms, and a current-shorting bonding wire extending between andconnected to said brackets, said wire being disposed beneath and passingbetween and in spaced relation to the mount parts.
 2. An insulator armassembly according to claim 1 in which the arms extend angularlyupwardly from said mount, and the bonding wire has an intermediateportion that passes between the mount parts and is in contact with theundersurfaces of the arms.
 3. An insulator arm assembly according toclaim 2 in which the arms adjacent to where they abut are provided witha longitudinal groove in which the mentioned bonding wire portion isdisposed.